Documentary examines risks and rewards of BASE jumping (Our grade: B)

Jean and Carl Boenish make a leap in the documentary “Sunshine Superman.”

Jean and Carl Boenish make a leap in the documentary “Sunshine Superman.”

Roger Moore | Tribune News Service

An eerie pall hangs over “Sunshine Superman,” a documentary history of BASE jumping, the practice of skydiving off buildings, broadcast antennas, spans (bridges) and earth (cliffs), hence the name BASE.

That’s connected to both the movie’s main subject, Carl Boenish, who dreamed up the sport, popularized it and died practicing it, and the ongoing high-risk/modest-altitude carnage that it continues to generate.